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Intermetallic compound superconductors and alloy superconductors and methods of making them

Intermetallic compound superconductors and alloy superconductors and methods of making them

外国特許コード

F110004957

整理番号

A061-16KR

掲載日

2011年7月28日

出願国

大韓民国

出願番号

20027011610

公報番号

20020092376

公報番号

100517455

出願日

平成14年9月4日(2002.9.4)

公報発行日

平成14年12月11日(2002.12.11)

公報発行日

平成17年9月28日(2005.9.28)

国際出願番号

JP2001006383

国際公開番号

WO2002055435

国際出願日

平成14年9月4日(2002.9.4)

国際公開日

平成14年7月18日(2002.7.18)

発明の名称
（英語）

Intermetallic compound superconductors and alloy superconductors and methods of making them

発明の概要（英語）

A novel intermetallic compound superconductor characterized in that it is an intermetallic compound consisting of magnesium (Mg) and boron (B), is represented by the chemical empirical formula Mg1B2, has a hexagonal AlB2 type crystalline structure, and has a superconductivity transition temperature (Tc) of 39K; an alloy superconductor which contains the intermetallic compound, is excellent in malleability and ductility and has a superconductivity transition temperature (Tc) of 39K; and a method for preparing the alloy superconductor which comprises mixing a raw material powder containing Mg and a raw material powder containing B, and subjecting the resultant mixture to, for example, pressure molding with heating. The alloy superconductor exhibits a high superconductivity transition temperature and also excellent malleability and ductility. The preparation method allows the preparation of the alloy with good reproducibility and at a low production cost. (C) KIPO WIPO 2007

特許請求の範囲（英語）

[claim1]1.

Magnesium (Mg) and boron intermetallic compound superconductor, characterized in that the intermetallic compound consisting of (B).[claim2]2.

Containing the intermetallic compound made of Mg and B, and alloy superconductor characterized in that the single or the alloy containing a plurality of metal elements.[claim3]3.

According to claim 1, The intermetallic compound superconductor is an intermetallic compound superconductor, characterized in that has a hexagonal AlB2 type crystal structure having a stacked composition, the Mg layer and a B layer alternately represented by the chemical composition formula Mg1B2.[claim4]4.

According to claim 2, The alloy superconductor alloy superconductor characterized by having a composition represented by the inter-metal-containing compound, a composition formula of Mg1-xB2 + y (0 ＜x ＜1, -2 ＜y ＜0 and 0 ＜y ＜2).[claim5]5.

According to claim 1, The intermetallic compound superconductor is a superconducting transition temperature of an intermetallic compound superconductor, it characterized in that the (Tc) is 39K.[claim6]6.

According to claim 2, The alloy superconductor alloy superconductor characterized in that the superconducting transition temperature (Tc) is 39K.[claim7]7.

The raw material powder and the raw material powder containing B containing Mg chemical composition ratio of Mg: B = 1: and mixed in 2, molded into a pellet, and the production of an intermetallic compound superconductor characterized in that the formation is heated in an inert gas Way.[claim8]8.

Chemical raw material powder containing a raw material powder and the B ratio Mg containing Mg: B = 1: 2 mixture, and molded into a pellet and method for producing an intermetallic compound superconductor characterized in that the formation is heated in a vacuum to .[claim9]9.

The raw material powder and the raw material powder containing B containing Mg chemical composition ratio of Mg: B = 1: and mixed in 2, the intermetallic compound superconductor characterized in that molded into a pellet form by heating in the pressurized inert gas The manufacturing method.[claim10]10.

A raw powder containing a raw material powder containing Mg and B, the chemical composition ratio of Mg: B = 1: 2 mixed in, and method for producing an intermetallic compound superconductor characterized in that it formed by molding onto the pellet and heated high-pressure molding .[claim11]11.

The raw material powder and the raw material powder containing the chemical composition B containing Mg Mg: B = 1-x: mixing a 2 + y (0 ＜x ＜1, -2 ＜y ＜0 and 0 ＜y ＜2), and , it formed into a pellet, and the manufacturing method of the alloy superconductor characterized in that it is formed by heating in an inert gas.[claim12]12.

Mixing a 2 + y, (0 ＜x ＜1, -2 ＜y ＜0 and 0 ＜y ＜2): the raw material powder and the raw material powder containing the chemical composition B containing Mg Mg: B = 1-x and molded into a pellet, and the manufacturing method of the alloy superconductor characterized in that it is formed by heating in a vacuum.[claim13]13.

A raw powder containing a raw material powder containing Mg and B, the chemical composition ratio of Mg: a 2 + y, (0 ＜x ＜1, -2 ＜y ＜0 and 0 ＜y ＜2): B = 1-x mixed, and manufacturing method of the alloy superconductor characterized in that molded into a pellet form by heating in the pressurized inert gas.[claim14]14.

A raw powder containing a raw material powder containing Mg and B, the chemical composition ratio of Mg: a 2 + y, (0 ＜x ＜1, -2 ＜y ＜0 and 0 ＜y ＜2): B = 1-x mixed, and manufacturing method of the alloy superconductor characterized in that it is formed by molding onto the pellet, and heated high-pressure molding.[claim15]15.

According to claim 7, The inert gas is heated in the method of the intermetallic compound superconductor, characterized in that performing at least several seconds at a temperature of 700 ~ 2000 ° C produced.[claim16]16.

According to claim 8, 2 × 10-2Pa vacuum heating is 650 ~ 1100 ° C temperature in water or more methods of the intermetallic compound superconductor according to claim for performing from the production of the following in the vacuum.[claim17]17.[claim18]10. The method of claim 9, The pressure in the heating in the inert gas is 1 to the metal production process of the intermetallic compound superconductor according to claim for performing at least the water pressure in an inert gas at a temperature of 600 ~ 1100 ° C of 200MPa.[claim19]18.[claim20]11. The method of claim 10, The pressure molding is heated while applying a pressure of 0.1 to 6GPa, 700 ~ method for producing an intermetallic compound superconductor characterized in that at least the heating water to a temperature of 1400 ° C.[claim21]19.

According to claim 11, The inert gas is heated in the method of the alloy superconductor, characterized in that performing at least several seconds at a temperature of 700 ~ 2000 ° C produced.[claim22]20.

According to claim 12, Method of producing a superconducting alloy is heated in the vacuum is characterized in that performing at least water to a temperature of 650 ~ 1100 ° C in a vacuum of less than 2 × 10-2Pa.[claim23]21.

According to claim 13, The pressure in the heating in the inert gas is 1 to the metal production process of the intermetallic compound superconductor according to claim for performing at least the water pressure in an inert gas at a temperature of 600 ~ 1100 ° C of 200MPa.[claim24]22.[claim25]15. The method of claim 14, The pressure molding is heated while applying a pressure of 0.1 to 6GPa, the manufacturing method of the alloy superconductor characterized in that at least the heating water to a temperature of 700 ~ 1400 ° C.